What does Resizable feature do in window.open method?

Resizable feature of window.open method specifies whether to display resize handles at the corners of the window or in other window,we can say that Resizable allow/disallow the user to resize the window.The default is yes.If we specify Yes then we can increase/decrease window meaning that we can resize window to full screen.We can also provide 1 for Yes and 0 for No.